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2 years ago

4. Around the age of _____, when the pituitary gland begins to produce ______, a boy begins puberty. (1 point)
16; progesterone
12; estrogen
12; testosterone
16; pheromones
5. A set of triplets includes one boy and two girls. The girls look exactly alike, whereas the boy is obviously their brother but has different features. How many eggs were fertilized to result in this set of triplets? (1 point)
1
2
3
4